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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.qpid.server.protocol;
import org.apache.qpid.AMQException;
import org.apache.qpid.server.queue.QueueRegistry;
import org.apache.qpid.server.exchange.ExchangeRegistry;
import org.apache.qpid.framing.AMQMethodBody;
/**
* Interface that allows classes to register for interest in protocol method frames.
*
*/
public interface AMQMethodListener
{
/**
* Invoked when a method frame has been received
* @param evt the event that contains the method and channel
* @param protocolSession the protocol session associated with the event
* @return true if the handler has processed the method frame, false otherwise. Note
* that this does not prohibit the method event being delivered to subsequent listeners
* but can be used to determine if nobody has dealt with an incoming method frame.
* @throws AMQException if an error has occurred. This exception will be delivered
* to all registered listeners using the error() method (see below) allowing them to
* perform cleanup if necessary.
*/
<B extends AMQMethodBody> boolean methodReceived(AMQMethodEvent<B> evt,
AMQProtocolSession protocolSession,
QueueRegistry queueRegistry,
ExchangeRegistry exchangeRegistry) throws AMQException;
/**
* Callback when an error has occurred. Allows listeners to clean up.
* @param e
*/
void error(AMQException e);
}
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